<template>
  <div class="app-container">
    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="courseQuery.title" placeholder="课程名称" />
      </el-form-item>

      <el-form-item>
        <el-select
          v-model="courseQuery.status"
          clearable
          placeholder="课程状态"
        >
          <el-option :value="'Normal'" label="已发布" />
          <el-option :value="'Draft'" label="未发布" />
        </el-select>
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getList()"
        >查询</el-button
      >

      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table
      v-loading="listLoading"
      :data="list"
      element-loading-text="数据加载中"
      border
      fit
      highlight-current-row
    >
      <el-table-column label="序号" width="70" align="center">
        <template slot-scope="scope">
          {{ (currentPage - 1) * pageSize + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="title" label="名称" width="400" />

      <el-table-column label="状态" width="100">
        <template slot-scope="scope">
          {{ scope.row.status === "Normal" ? "已发布" : "未发布" }}
        </template>
      </el-table-column>

       <el-table-column prop="lessonNum" label="课时数" width="80"/>

      <el-table-column prop="gmtCreate" label="添加时间" width="200" />

      <el-table-column prop="viewCount" label="浏览数量" width="100" />

      <el-table-column label="操作" width="400" align="center">
        <template slot-scope="scope">
          <router-link :to="'/course/info/' + scope.row.id">
            <el-button type="primary" size="small " icon="el-icon-edit"  plain
              >修改课程基本信息</el-button
            >
          </router-link>

          <router-link :to="'/course/chapter/' + scope.row.id">
            <el-button type="primary" size="small " icon="el-icon-edit"  
              >修改课程大纲</el-button
            >
          </router-link>

          <el-button
            type="danger"
            size="small "
            icon="el-icon-delete"
            @click="removeDataById(scope.row.id)"
            >删除</el-button
          >
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->

    <el-pagination
      :current-page="currentPage"
      :page-size="pageSize"
      :total="total"
      style="padding: 30px 0; text-align: center"
      layout="total, prev, pager, next, jumper"
      @current-change="getList"
    />
  </div>
</template>


<script>
//引入js文件
import course from "@/api/edu/course";

export default {
  // data:{}
  data() {
    return {
      listLoading: true, //是否显示“数据加载中这几个字”

      list: null, //封装返回的数据
      total: 0, //数据条数
      currentPage: 1, //当前页码
      pageSize: 10, //每页显示条数
      courseQuery: {
        //查询条件
        
        title: "",// 可加可不加
        status: "",
      },
    };
  },
  created() {
    this.getList();
  },
  methods: {
    getList(currentPage = 1) {
      this.currentPage = currentPage;
      course
        .getCourseListPage(this.currentPage, this.pageSize, this.courseQuery)
        .then((res) => {
          //   console.log(res)
          this.total = res.data.total;
          this.list = res.data.rows;
          // console.log(this.total);
          // console.log(this.list);
          this.listLoading = false; //将“数据加载中”这几个字关掉
        })
        .catch((error) => {
          console.log(error);
        });
    },
    resetData() {
      //清空查询条件
      this.courseQuery = {};
      this.getList();
    },
    removeDataById(id) {
      //删除方法
      //提示信息
      this.$confirm("此操作将永久删除该课程, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          //调用删除方法
          course.removeCourse(id).then(() => {
            this.$message({
              type: "success",
              message: "删除成功!",
            });
            this.getList();
          });
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });
    },
  },
};
</script>